Limbal Stem Cell Derived Exosome (LSC-Exo) Eye Drop for Treatment of Dry Eye

This study is testing a new type of eye drop made from tiny particles (exosomes) derived from stem cells on the surface of the eye, to see if it can help people with moderate to severe dry eye disease. **You may be eligible if...** - You are 18–70 years old - You experience symptoms of dry eye such as burning, itching, or a gritty sensation - You have moderate or severe dry eye disease **You may NOT be eligible if...** - You have had previous eye surgery - You have a condition that weakens the immune system - You are pregnant or breastfeeding - You have eyelid abnormalities - You have used eye drops (other than artificial tears) in the past year - You have worn contact lenses in the last 3 months - You have taken medications that affect tear production in the last 3 months Talk to your doctor to see if this trial is right for you.